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Flowmaster 425403 Series Chambered Muffler Aggressive Sound - 40

Part of: Flowmaster Series Chambered Muffler Aggressive Sound

Other options in this family: Flowmaster 42441 Flowmaster 430402 Flowmaster 42541 Flowmaster 43043 Flowmaster 42543

Manufacturer

Picture for manufacturer Flowmaster

Part Number

425403
8 reviews
Sale Price

$101.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Flowmaster 40 Series Chambered Muffler delivers an aggressive exhaust tone that's perfect for enthusiasts seeking a bold sound both inside and outside the vehicle. This performance muffler utilizes Flowmaster's original two-chamber design to produce the deep, powerful sound that made the brand legendary.

Key Features:

  • Aggressive exterior exhaust tone with noticeable interior resonance
  • Original two-chamber design for maximum performance and sound
  • Constructed from fully welded 16-gauge aluminized steel for long-lasting durability
  • Ideal for street/strip, muscle cars, trucks, and off-road applications
  • Moderate to aggressive sound level for performance-oriented vehicles

The 40 Series is one of Flowmaster's most popular muffler lines, offering a balance between performance gains and classic muscle car sound. The chambered design reduces backpressure while creating the distinctive Flowmaster tone that sets your vehicle apart. Built to withstand harsh conditions, the fully welded construction ensures leak-free performance for years to come.

Products specifications

Body Height

4.00

Body Length

13.00

Body Material

Aluminized steel

Body Width

9.50

Brand

Flowmaster

Prop 65

No

Category

Exhaust

Clamps Included

No

Color

Black

Emission Code

5

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Finish

High-Temperature Paint

Fitment

Universal

Grade Type

Performance

Hanger Included

No

Heat Shield Attached

No

Inlet Connection

Slip-Fit

Inlet Diameter

2.50

Inlet Inside Diameter

2.50

Inlet Location

Dual

Inlet Outside Diameter

2.63

Inlet Quantity

2

Inlet Type

Weld-On

Inlet Type

Clamp-On

Muffler Series

Original 40 Series

Muffler Type

Chambered

Outlet Connection

Slip-Fit

Outlet Location

Center

Outlet Quantity

1

Outlet Type

Single

Overall Length

19.00

Part Type

Exhaust Muffler

Product Type

Street Mufflers

Reversible

No

Shape

Oval

Sound Level

Aggressive

Sub Category

Mufflers

Tunable

No

Universal Or Specific Fit

Universal

Vehicle Type

Street/Strip

Vehicle Type

Late Model Muscle Car

Vehicle Type

Truck/SUV

Vehicle Type

Classic Muscle Car

Vehicle Type

Street Rod

Easy and smooth! Best prices!!

so far so good cheap price 50.00 cheaper it worked out got here fast the right part good job thanks

Safari, sagoody

always quick & easy also bought hotchkis front sway from here no problem & best price -free shipping

great. smooth. no problems

Excellent

i need this really bad

It was very easy to find and buy this item because I have an amazon account. Thanks

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